Since the 1950s

the main task of nuclear geological exploration units has been to engage in uranium ore exploration. After the exploration was stopped

a large number of radioactively contaminated areas were left. In order to properly control the remaining radioactively contaminated areas

decommissioning of uranium mines and uranium mines was carried out. Through the investigation and analysis of the radiation environment after decommissioning and treatment

the surface γ radiation dose rate

radon concentration

soil and surface water radionuclide uranium and radium content of the uranium mine and its surrounding environment after treatment were measured and obtained

among which the waste rock pileγ The radiation dose rate was the highest at 0.183 μGy/h

the radon precipitation rate at the mouth of the puddle was the highest at 0.17 Bq/（m~2·s）

and the radionuclide uranium and radium contents in the sediment of the polluted river reached the highest

at 38.80 mg/kg and 151.10 Bq/kg

which is lower than the decommissioning treatment management limit. It is considered that the decommissioning treatment effect of this decommissioned uranium mine is good.